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Moreover, you can set the Sensitivity level for motion triggered by
selecting from 1 (low), 2, 3, 4, 5, 6, 7, 8, 9 to 10 (high).
2.7.3 Alarm
Figure 2-60 Event – Alarm Tab
Alarm Output Setting
Contact Type: Normal Close, Normal Open
Duration Time: Select duration time of alarm output from 5 sec, 10 sec, 20
sec, 30 sec, 60 sec, 2 min, 3 min and 5 min.
Press Apply to apply the setting changes or Reset to reset without saving
the change.
Pre/Post Alarm Setting
This function is used to check what happened immediately before and after
a trigger, e.g. 5 seconds before or after a motion has been detected.
Pre-Alarm Buffer: Image saved internally in the server from the time
immediately preceding the trigger. Input the desired length of pre-trigger
buffer time. It can be set up to 120 seconds.
Post-Alarm Buffer: Image saved internally in the server from the time